Add title to 'add' dialog for 'association_table' widget of Sudo entity
To improve translation quality the title of 'Add' dialog,
which is initialized within details table of the entity, should be
specified explicitly in the spec and should be an entire sentence.
Fixes: https://pagure.io/freeipa/issue/7712
Fixes: https://pagure.io/freeipa/issue/7714
Reviewed-By: Serhii Tsymbaliuk <stsymbal@redhat.com>